ASTROSAT CZTI

Data Quality Report

Orbit 01795

Creation date: 2024-06-27T14:12:48.647844
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1G02_020T01_9000000296_01795cztM0_level2.evt modeM0/AS1G02_020T01_9000000296_01795cztM0_level2_quad_clean.evt
Size (bytes)1,010,600,64099,230,400
Size963.8 MB 94.6 MB
Events in quadrant A7,394,446655,482
Events in quadrant B7,588,241664,174
Events in quadrant C8,051,193633,710
Events in quadrant D7,171,787629,754

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B110
C1-1-1
D1-1-1

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0262811
B0268201
C0281811
D0255751

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6041510.844231%
B6041550.910445%
C6041931.539480%
D6041530.877338%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7241 6041 228 228 3.15% 3.77%
B 7241 6042 265 265 3.66% 4.39%
C 7241 6042 619 619 8.55% 10.24%
D 7241 6042 249 249 3.44% 4.12%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 15 236 13045 24.04 1927 1942 461.9
A 0 231 9842 17.1 1927 1942 461.9
A 10 2 8494 14.19 1927 1942 461.9
B 4 200 21730 42.04 1996 2006 469.2
B 0 234 6663 9.93 1996 2006 469.2
B 0 220 6376 9.31 1996 2006 469.2
C 8 208 1034382 2077.98 1781 1836 496.9
C 10 82 56005 109.01 1781 1836 496.9
C 9 236 10314 17.06 1781 1836 496.9
D 13 169 199141 367.09 1752 1817 537.5
D 7 34 139589 256.3 1752 1817 537.5
D 7 85 83954 152.8 1752 1817 537.5

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter